Most of the post-WWII recessions were caused by the Fed tightening monetary policy to slow inflation. I think this is the most likely cause of the next recession. Usually, when inflation starts to become a concern, the Fed tries to engineer a "soft landing", and frequently the result is a recession. Since inflation is not an immediate concern, the Fed will probably stay accommodative for a few more years. So right now I expect further growth for the next few years (all the austerity in 2013 concerns me, especially over the next couple of quarters as people adjust to higher payroll taxes, but I think we will avoid contraction). I think the most likely cause of the next recession will be Fed tightening to combat inflation sometime in the future - and residential investment (housing starts, new home sales) will probably turn down well in advance of the recession. In other words, I expect the next recession to be a more normal economic downturn - and I don't expect a recession for a few years.

And if it's true that this era is coming to an end, then that means it's time to return to more traditional analysis, and thinking about when the next normal recession will be, and what will cause it. And in the past it's been the Fed that's caused recessions, and if you think we're back in the old normal, it's a solid bet that it will be the Fed again.